tweets revealing internal information, criticizing senior administration officials, including the president. jofi joseph was a top national security director and working on negotiations with iran. he was fired last week after officials discovered he was behind the twitter account, the statement to nbc news, joseph takes responsibility for the account saying in part, quote, i deeply regret violating the trust and confidence placed in me. what started out as an intended parody account developed into a series of inappropriate and mean-spirited comments. the daily beast, which was the first to break the story, one reading, i'm a fan of obama but his continuing reliance on a vak